It really doesn't matter if Mr. Eich donated 1000 dollars or a million dollars, he opposes basic human rights. And apparently Mozilla is fine with that.
Does Mr. Eich still feel the same now as he did when he made that donation? I haven't done any research on this topic outside of the linked Ars article, but I find it interesting that Eich's own statement[1] about his donation completely avoids talking about his motivations for the donation. He even implied that he does not feel animosity towards gay people (although what he explicitly said was that the donation does not constitute evidence of animosity). So I'm left wondering as to what Mr. Eich actually feels on the topic.
Yes, he donated money to a cause that opposed basic human rights, and that's undeniably an action worthy of condemnation. But in isolation, this 6-year-old action does not prove anything about his feelings on the matter today. What matters right now is how Mr. Eich will lead Mozilla going forward, not personal acts taken 6 years ago that were not on behalf of Mozilla.
[1]: https://brendaneich.com/2012/04/community-and-diversity/
I'm actually married (religious ceremony) but not officially 'married' (according to the government) and I don't care nor does it really matter where I live (common-law spouses get benefits anyway). And I'm not even against gay marriage, I just don't 'get' why it's a big deal...
Anyhow, I'm sure there's plenty of other exceptions when it comes to equality... Old people, minorities, pregnant women all get preferential treatment in a variety of circumstances, and it's not a bad thing...
What next?
If a person doesn't donate to a campaign supporting gay marriage, does that mean the person is a bigot and homophobic?
There's a pattern here. This issue is one that's important to Eich. I will certainly judge him on that and judge those who empower him and there's absolutely nothing fascist about exercising my freedom of association.